Correct Option
D
Explanation
Steel slag, a byproduct generated during steel manufacturing, possesses characteristics that enable its utilization in diverse applications:
- Construction of base road: Steel slag exhibits robust mechanical properties, including high compressive strength and durability. These attributes render it suitable for use as an aggregate in road base and sub-base layers, contributing to enhanced structural integrity and longevity of road infrastructure.
- Improvement of agricultural soil: When processed, steel slag can serve as a soil conditioner. It provides essential elements such as calcium and various micronutrients, aids in neutralizing acidic soils, and improves soil physical structure, thereby supporting agricultural productivity.
- Production of cement: Steel slag is a valuable component in the manufacture of certain cement types, notably Portland Slag Cement (PSC). Its incorporation contributes to improved strength and durability of the cement while effectively utilizing industrial waste materials.
Incorrect Options
Options A, B, and C are incorrect because they exclude one or more of the valid applications of steel slag. All three statements (1, 2, and 3) accurately describe potential uses for steel slag.